What makes you happy? The people in your life? Good health? How about a shopping spree? Tonight Shayna Seymour and Ted Reinstein are looking for the answers to the ultimate question, as Shayna discovers money is not always a shortcut to satisfaction and Ted learns why Somerville proclaims itself the happiest city in the state. Plus, who's happier: married couples with children, or without. A controversial study provides an unexpected answer.